Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following structures is not part of the external ear?
A
Tympanic membrane
B
Auricle
C
External auditory canal
D
Helix
Verified step by step guidance
1
Begin by understanding the anatomy of the external ear. The external ear consists of structures that are visible from the outside and are involved in collecting sound waves.
Identify the components of the external ear: the auricle (also known as the pinna), the external auditory canal, and the helix, which is part of the auricle.
Recognize that the tympanic membrane, also known as the eardrum, is not part of the external ear. It serves as a boundary between the external ear and the middle ear.
Consider the function of the tympanic membrane. It vibrates in response to sound waves and transmits these vibrations to the ossicles in the middle ear.
Conclude that the tympanic membrane is not part of the external ear, as it is located at the end of the external auditory canal and marks the beginning of the middle ear.